Shrinkage of protoplast due to exosmosis of water is__________?
Correct answer: B. plasmolysis
- A. imbibition
- B. plasmolysis
- C. deplasmolysis
- D. adhesion
Explanation
Plasmolysis occurs when a plant cell loses water by exosmosis, causing the protoplast to shrink away from the cell wall. Deplasmolysis is the reverse process after water re-enters the cell, so it is the likely distractor for students who confuse water loss with water gain.
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About Biological Importance of Water
Water supports life through its polarity, hydrogen bonding and ability to dissolve ionic and polar substances. Its high specific heat, heat of vaporization, cohesion, adhesion and incompressibility help regulate temperature, transport materials and maintain structure, while hydrolysis and osmosis depend directly on water.
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